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                城市规划                </h1>
                <p>时间限制：40s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><p><span style="font-size: medium">&nbsp;刚刚解决完电力网络的问题, 阿狸又被领导的任务给难住了.<br />
&nbsp;刚才说过, 阿狸的国家有n个城市, 现在国家需要在某些城市对之间建立一些贸易路线, 使得整个国家的任意两个城市都直接或间接的连通.&nbsp;为了省钱, 每两个城市之间最多只能有一条直接的贸易路径. 对于两个建立路线的方案, 如果存在一个城市对, 在两个方案中是否建立路线不一样, 那么这两个方案就是不同的, 否则就是相同的. 现在你需要求出一共有多少不同的方案.<br />
&nbsp;好了, 这就是困扰阿狸的问题. 换句话说, 你需要求出n个点的简单(无重边无自环)无向连通图数目.<br />
&nbsp;由于这个数字可能非常大, 你只需要输出方案数mod 1004535809(479 * 2 ^ 21 + 1)即可.<br />
</span></p></p><hr/><h3>输入格式</h3><p><p><font size="4">&nbsp;仅一行一个整数n(&lt;=130000)<br />
&nbsp;<br />
</font></p></p><hr/><h3>输出格式</h3><p><p><font size="4">&nbsp;仅一行一个整数, 为方案数 mod 1004535809.<br />
&nbsp;<br />
</font></p></p><hr/><h3>样例输入</h3><pre> 3

</pre><hr/><h3>样例输出</h3><pre> 4
</pre><hr/><h3>提示</h3><p><p>&nbsp;对于 100%的数据, n &lt;= 130000<br />
</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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